| Name | CVE-2018-18493 |
| Description | A buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1605-1, DLA-1624-1, DSA-4354-1, DSA-4362-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 138.0.4-1 | fixed |
| firefox-esr (PTS) | bullseye | 115.14.0esr-1~deb11u1 | fixed |
| bullseye (security) | 128.10.1esr-1~deb11u1 | fixed | |
| bookworm | 128.10.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 128.10.1esr-1~deb12u1 | fixed | |
| sid, trixie | 128.10.1esr-1 | fixed | |
| thunderbird (PTS) | bullseye | 1:115.12.0-1~deb11u1 | fixed |
| bullseye (security) | 1:128.10.1esr-1~deb11u1 | fixed | |
| bookworm | 1:128.10.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 1:128.10.1esr-1~deb12u1 | fixed | |
| trixie | 1:128.10.0esr-1 | fixed | |
| sid | 1:128.10.1esr-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| firefox | source | (unstable) | 64.0-1 | |||
| firefox-esr | source | jessie | 60.4.0esr-1~deb8u1 | DLA-1605-1 | ||
| firefox-esr | source | stretch | 60.4.0esr-1~deb9u1 | DSA-4354-1 | ||
| firefox-esr | source | (unstable) | 60.4.0esr-1 | |||
| thunderbird | source | jessie | 1:60.4.0-1~deb8u1 | DLA-1624-1 | ||
| thunderbird | source | stretch | 1:60.4.0-1~deb9u1 | DSA-4362-1 | ||
| thunderbird | source | (unstable) | 1:60.4.0-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-18493
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18493
https://www.mozilla.org/en-US/security/advisories/mfsa2018-31/#CVE-2018-18493